Interaction between GIS and hydrologic model: A preliminary approach using ArcHydro Framework Data Model

  • Silvio Jorge Coelho Simões Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Brasil
Keywords: geospatial analysis, water resource management, Paraíba do Sul Basin


In different regions of Brazil, population growth and economic development can degrade water quality, compromising watershed health and human supply. Because of its ability to combine spatial and temporal data in the same environment and to create water resources management (WRM) models, the Geographical Information System (GIS) is a powerful tool for managing water resources, preventing floods and estimating water supply. This paper discusses the integration between GIS and hydrological models and presents a case study relating to the upper section of the Paraíba do Sul Basin (Sao Paulo State portion), situated in the Southeast of Brazil. The case study presented in this paper has a database suitable for the basin’s dimensions, including digitized topographic maps at a 50,000 scale. From an ArcGIS®/ArcHydro Framework Data Model, a geometric network was created to produce different raster products. This first grid derived from the digital elevation model grid (DEM) is the flow direction map followed by flow accumulation, stream and catchment maps. The next steps in this research are to include the different multipurpose reservoirs situated along the Paraíba do Sul River and to incorporate rainfall time series data in ArcHydro to build a hydrologic data model within a GIS environment in order to produce a comprehensive spatial temporal model.

Author Biography

Silvio Jorge Coelho Simões, Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Brasil
Dossui graduação em Geologia pela Universidade de Fortaleza (1978), mestrado em Geociências pela Universidade Estadual de Campinas (1992), doutorado em Geografia (Geografia Física) pela Universidade de São Paulo (1996) e pós-doutorado em Hidrologia pela Universidade de Harvard. Atualmente é professor assistente doutor da Universidade Estadual Paulista (UNESP). Tem experiência na área de Engenharia Civil, com ênfase em Hidrologia, atuando principalmente nos seguintes temas: variabilidade climática e recursos hídricos, gestão e monitoramento de recursos hídricos, geohidrologia e análise geoespacial.